December 2013
Intermediate to advanced
752 pages
16h
Chinese
Content preview from MOBILE WEB程式設計--第二版
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HTML5 表單
|
247
如表 8-2 所示，有一些 Android 設備的瀏覽器支援 HTML Media Capture，如果你使用
capture
屬性的話，當控制項啟動時，會自動地開啟適當的 App（照相機或錄音機），而
不會顯示任何對話方塊。
有一些瀏覽器遇到檔案上傳控制項時，會開啟一個檔案系統瀏覽器，用來打開內部或
外接記憶卡來選擇檔案並且將它上傳。如 Nokia S40 的 Xpress 瀏覽器與社交手機上的
Opera Mini。
我們可以按照檔案上傳的相容性，將行動瀏覽器分類為：
完全不相容
你的欄位會被停用。
基本相容
使用者可以上傳一個檔案，但是沒有篩選功能，而且不支援 HTML Media Capture。
有一些瀏覽器會讓使用者使用照相 App 在螢幕擷取檔案。
可使用篩選器
使用者只能上傳一個檔案，但是你可以使用
accept
屬性來篩選檔案（通常至少可以
篩選圖像與視訊）。
HTML5
相容
使用者可以上傳一或多個檔案，而且完全可以使用
accept
屬性。
HTML Media Capture
相容
所有選項都可使用。通常在使用擷取功能時，不能同時使用
multiple
。
表 8-2 是本書編著時期的瀏覽器相容性摘要。
表 8-2 檔案上傳相容性
瀏覽器∕平台 基本支援 檔案選擇器∕擷取 accept 屬性 multiple 屬性 capture 屬性
iOS Safari <=5.1 無，
6.0+ 有
選擇器與照相機擷取 有，只有圖像與
視訊
有 無
Android
瀏覽器
<=2.1 無，
2.2+ 有
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.